Can lacquering or coating machine.



J. G. HODGSON. CAN LAGQUERING 0R COATING MACHINE.

APPLIOATION FILED MAB. 19. 19de.`

Le. HoDGsoN. y GAN LAGQUERING on comme MACHINE. PPLIOATION FILED MAB.19, 1908.

Patented Aug. 31', 1909.

5 SHEETS-SHEET Z.

v J. G. HODGSON.

GAN LAGQUERING 0R OOATING MAHINE.

Egg

APPLIUATION FILED MAR. 19, 1908.

Patented Aug. 31, 1909.

HEBTB-SHEET 3.

J. G. HODGSON. GAN LACQUERINGl 0B GOATING MACHINE.

APPLICATION FILED MAR.19, 1908.

Patented Aug. 31, 1909.

ffm o MT .M .1. ,J y

- with a plurality of can holders, preferably- Unrrnp STATES lParrmvr OFFICE.

I JOHN G. HODGSON, 0F HAYWOOD, ILLINOIS, ASSIGNOR TO IIERICAN CAN COMPANY, OI? NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

CAN-LACQUERING OR COATING MACHINE.

I Specification of Let-ters Patnt. Patented Aug. 3,1, 1909.

Applicationled March 19, 1908.. Serial No. 421,967.

To all 'whom 'it may concern:

Be it known that I, J oHN G. HonesoN, a citizen of the United States, residing in Maywood, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Can Lacquering or Coating other protective coating, and by which the' work may be done rapidly and cheaply and the lining or coating rendered dry, hard, solid and firmly adherent, innocuous, .tasteless, insoluble in vegetable or food acids or juices, and alsocapable of successfully withstanding without injury the heat of the cookingor processing step to which the cans are subjected after being filled and the heat of the soldering operation employedv in soldering in place the caps that close the filling openings in the cans.

My invent-ion conslsts in connection with an 'endless` link chain can carrier, furnished rotating rollers, combined with a gang or series of reciprocating spray heads adapted to enter and simultaneously spray a series of cans.A

It further consists in connection with these elements, of a runway or device for automatically delivering the cans to the can L holders, and a discharge runway for the freshly coated cans and a flashing or igniting device for flashing or. 1gn1t1ng the lnflammable vapors arlsing'in andussuing from the freshly coated cans, and thus quickly drying and hardening and vrendering firmly adherent and also innocuous andtasteless the lacquer or other protective coating applied by the spray heads to the interior surfaces of the cans. f 4 l It further consists in the novel construe tion of parts and devices and in the novel combinations ofparts and devices' hereinshown and described.v

In the accompanying drawing forming a part of this specification, Figure 1 is aside elevation of a can lacquering or spraying machine 4embodying my invention. Fig. 2 is a plan View. Flg. 3 1s a vertical cross section on llne 3 3 of Fw. 1. Flg. 4 1s a detail vsectionon line 4% .of Fig. 2. Fig. 5 is an enlarged detail section on line 5- 5 of Fig. l. Fig. 6 is a Idetail section on line (3f-6 of Fig. 5. Fig. 7 is a detail section on line 7 7 of Fig. 5. Fig. 8 is a det-ail plan view partly in horizontal section of the spray head, showing also the can in section and Fig. 9 is a section on line 99 of Fig. 8.

In the drawing, A represents the frame of the machine, B the spray heads,C the can holders, D the endless flexible carrier or.

chain conveyer upon which the can holders are lnounted, E the can feed runway or device for delivering the cans to the can holders, F the can rotatingdevice, G the feed devices for the liquid lacquer or coating material, one foreach spray head, H- the discharge runway for the freshly coated cans, K a gas jet or flashing device for igniting the inammable vapors arising from and issuing from the freshly coated cans, H1 an endless belt or device for rolling'the cans along the discharge runway past the igniting device, M N upper and lower tanks for containing and supplying the liquid lacquer or coat-ing material to the feed plungers or devices. l l

The gang of' simultaneously operated vspray heads may contain 4any desired number of such heads, but in practice I prefer to employ a gang of Vfive spray heads, all mounted upon the same transversely reciprocating slide so that five cans in the holders 'of the link chain can carriery may be l simultaneously operated u on .b the s ra ing devices. Each of the psprayyheadspB'is preferably of a looped pipe construction and of substantially rectangular form, sur rounding its compressed air head B1. As the spray headsv are all preferably of the same construction, a description of one will suffice for them all. Each of the spray heads B is preferably lfurnished with a. .plurality -of upwardly projecting nipples or'nozzles b, the upper ends of which projectslightly above the upppr surface ofthespray head B, and the lower ends of which extend to near the bottom of the spray head chamber,

so that these nipples or nozzlesy may withdraw substantially all the lacquer or protective coating from the spray head B. The

compressed air head B1 isv furnished withv roo a series of jet orices b1 through which blasts of compressed air are directed over the upper end of the jet nipples or nozzles b of the spray head. The spray head B is removably secured to the spray head holdl b for the compressed air plunger B6 by which the admission of compressed air to\ the compressed air head B1 is controlled. The feed plunger VGr is furnished with a` feed pocket g of a size or capacity to deliver at each stroke of the feed plunger just enough liquid lacquer or other coatingfor one can, and the stroke of the compressing plunger is, also regulated so as to force just the required charge' of liquid lacquer or other coating material-necessary for one can into each can. The plungers- G, Bis and BG are automatically reciprocated as required b means of' cams B7 B8 B9 on the rock sha B1which is mounted on the slide B3, and which cams operate said plungers throu h suitable connecting levers B11 B12 B13 w ich are fulcrumed on the bar B14, carried by the slide B1. The liquid lacquer or coating materiall feeds down by avity from the supplemental supply tank into the feed chamber b3 and the feed plunger pocket g through the connecting pipe. b". The spray head holder B2 is also provided with a vent pipe Vb3 toprevent air or other v fluid being trapped in the end of the feed plunger chamber b3. The' spray head holder B3 is further provided w1th a passage-b2 leading fromthe feed chamber bs to the compressing chamber. Zi, through which passage the charge of liquid lacquer or coating material in the pocket g of the feed plunger G flows down 1n front of the compressing plunger B5 by which it is forced into the spray head. The compressed air chamber or cylinder b1 of the spray head holder B2 is connected by api e 61 with the compressed air he'ad B1, t e pipe 61 being preferably made integral with said head as Ain dlcated in the drawing.

The can holder C may be of any suitable construction adapted to hold the can in cooperativel relation with the spray head whether the can or the spray head be the member that is rotated. In that embodiment of myinvention wherein the can is the member rotated, as illustrated in the drawing, the canholder is rotatable or of a construction adapted to permit the rotation of -cans in the can holders C of into registry with the gang of spray heads the can. The construction of the rotatable can holder C which I refer to employ con-' sists of a pair of ro ers, each preferably furnished with flanges C1 at each end to prevent longitudinal movement of the can in can carrier or conveyer D. The shafts C2 of the can holder roller C arey journaled in suitable holes or bearings d1 in the links d of the link chain carrier or conveyer D, and these. shafts C2 may preferably serve also as the pivotal connections between the ends of adjacent links d.

The link chain carrier D is mounted upon and operated by sprocket wheels D1, the shafts D2 of which are journaled on the frame. of the machine. The link chain can carrien D may be intermittently operated with a step by. stelp movement of suflicient extent to bring eac successive Group of five the carrier D B by any suitable mechanism, the same consistinU preferabl of a gear @Z2 on the shaft D2 of? one of t e sprocket wheels which meshes with a ear da on the shaft d* which is furnished with a ratchet d and is operated by a pawl d on the bent lever-d7 and which is connected by a link d8 to a disk d on the main driving shaft D4.

The device E for delivering the cans to the can holders on the link chain carrier D automatically, preferably consists of an inclined runway having guide flanges E1 and an upper'guide rail 2.

. The means for simultaneously and automatically rotating the group of cans in the can holders of the link cham carrier which aref simultaneously operated upon by the gan of spray heads may be of any suitable king or construction. lt, however, refer-A4 ably consists `of an endless ilexible elt F, whlch en ges the group of cans when the same are rou ht into register with the gang of s ray hea s Bby movement of the can holdlir carrier D. The can rotating belt F is mounted u on a pair of pulle s F1 F2, the shafts f o which are journale in vertlcally adjustable bearings f1 on the frame of the machine so that the can rotating belt may be adjusted' u and down to accommodate cans ofl di erent diameters. The shaft f of one ofthe pulleys F 1 s furnished with a pulley f1 to which motion 1s communicated by a belt f1.

The ,liquid lacquer or coating material supply tank M is preferably a tight or hermetlcally closed tank, and it is furnished with a feed pipe m, the lower end m1 of which projects into the supplemental open the inside thereof, and to free the same from tank N above the lower end m2 of the air or vent pipe m which leads from the upper portion ofthe closed tank M into the .open or supplemental tank N. The lower end m2 of the vent lpipe m3 thus automatically controls, regulates or keeps uniform the height oilevel of the liquid lacquer vor coating material in the open or supplemental tank N. When the liquid lacquer or coating material rises in the open or supplemental tank N high enough\to seal the lower end m2 of the vent pipe m3, further flow of the liquid from the closed tank M into the open tank N is automatically stopped until the level of the liquid in the open tank N again falls below the lower end m2 of the vent pipe m3.

The discharge device H by which the freshly coated cans are discharged from the can holders zand conveyed `past the as jet or igniting device K preferably consists of a runway, the inner end of which is preferably somewhat inclined. The rails of this runway have upright flanges h to guide the cans as they lroll along it. To insure proper movement of the cans along lthe runway,- I'

prefer to provide it with an endless conveyer chain or belt H1 mounted on pulleys H2, the shafts H3 of which are journaled in suitable bearings or supports on the frame of thehmachine. The shaft of one of these pulleys is preferably driven by a belt h1.

To flash and sterilize the cans by re, and

also to quickly dry, harden and render firmlyv adherent the Vpreservative coating applied on vapors arising from the volatile and inflammable ingredients of the lacquer or preservative coating applied thereto and consequent inju-ry to workmen or danger of fire, and also toeliminate from the interior coatings of the cans all taste, odor, or flavor that might -otherwise exist from thecoating, I mount adjacent to the can runway H a gas jet or other igniting device K so that as each can passes the gas jet on the runway the vapors in the can and issuing therefrom will be flashed, exploded and burnt.

To properly support .the group of cans in the can holders so that they will correctly register with the gang `of reciprocating spray heads, the main frame of the machine is rovided with tracks or rails R upon which the links of the link chain can carand downen the frame of the machine toy accommodate cans of different diameters by adjusting screws B10. Said slide B8 is reciprocated as required by means of a cam D5 on the driving shaft D through thel shaft D4.

lever d2 carrying a roller (Z3, and which is connected by a link d4 with a lever el which is connectedv by a link el with said spray head slide B3.

The rock shafts B10 which carry the sev# eral cams B7 BS B9 that actuate the several plungers in the spray head holder, are automatically rocked at intervals by means of a reciprocating lbar l 011 the arms B17 of said rock shafts B1", and which bar P is actuated by means of an arm I1 connected by a link P2 with a bent lever P3 having a swivel joint P4 at one end and which carries a roller P5 traveling in the vcam P on the driving I claim 1. In an automatic machine for coating the interiorl of cans with lacquer or prdtective material, the combination with an endless flexible can carrier furnished with a 4plurality of rotatable can holders, a runway for delivering the cans'to the holders, means for simultaneously axially rotating a group of cans in the holders, and a gang of reciprocating spray heads spaced relatively to said holders and adapted each to enter a can, substantially as specified.

2.' In an automatic machine for coating the interior of cans with lacquer or protective material, the combination with an cndless fiexible can carrier furnished with a plurality of rotatable can holders, a runway for delivering the cans to the holders, means for simultaneously rotating agroup of cans i'n the holders, a gang of reciprocating spray heads adapted each' to enter a can, each of said-spray heads having a plurality of jets and a compressed air head having a plurality of orifices, substantially as specified.

3. In an automatic machine for coating the interior of cans with lacquer or protective material, the combination with an endless flexible can carrier furnished with a plurality of rotatable .can holders, a runway for delivering the canslto the holders, means for simultaneously rotatinga group of cans in the holders, a gang of reciprocating spray heads adapted each to enter a can, each of said spray heads having a plurality of jets anda. compressed air head having a plurality of orifices, a reciprocating holder for said spray heads furnished with a plurality of feedplungers, one for each spray head, substantially as specified.

'4. In an automatic machine for coating the interior of cans withlacquer or protective material, the combination -with an endless flexible can carrier furnished with a plurality of rotatable can holders, a runway for delivering the cans to .the holders, means for simultaneously rotating a group of cans in the holders, a gang of reciprocating spray heads adapted each to enter a can, each of said spray heads-having a plurality of jets and a compressed air head having a plufor deliveringthe cans to the holders, means forsimultaneously rotating a group of cans in t'he holders, a gang of reciprocating spray heads adapted each to enter a can, each of said spray heads having a' lurality of jets and a compressed air head avin a plurality of orifices, a .reciprocating holger for said spray heads furnished with .a plurality of feed plungers, one for each spray head and with a plurality of compressing plungers,

one for each spray head, and a plurality of compressed air istons, one for each spray head, substantia ly as specified.

6. In an automatic machine for coating the interior of cans with lacquer or protective material, the combination with an endless flexible can carrier furnished with a plurality of rotatable can holders, a runway for delivering the cans to the holders, means for simultaneously rotating a group of cans in the holders, a gang of reciprocating spray heads. adapted each to enter a can, a discharge runway and a flame device for flashing or igniting and sterilizing the freshly coated cans as they pass on the discharge runway, substantially as specified.

7. In an automatic machine forcoating the interior of cans with lacquer or protective material, the combination with an endless flexible can carrier furnished with a plurality of rotatable can holders, a runway for delivering the cans to the holders, means for simultaneously rotating a group of cans in lthe holders, a gang of reciprocating spray heads adapted each to enter a can, each of said spray heads havingaplurality of jets and a compressed air head having a plurality of orifice/s, a reciprocating holder for said spray heads furnished with a plurality of feedplungers, one for each spray head and ivitlra plurality of compressing plungers, one for each spray head, a. discharge runway and a flame device for flashing .or

igniting and sterilizing the freshly coatedl cans as they pass on the discharge runway, substantially as specified.

8. In an automatic machine, for coating the interior of cans with lacquer or protective material, the combination with an endless flexible can carrier furnished with a plurality of rotatable can holders, a runway for delivering .the cans to-the holders, means for simultaneously rotating a group of cans 1n the holders, a gang of reciprocating, spray combination with an end for eac -heads adapted each to enter a can, each of4 said spray heads having a plurality. of jets and a compressed -air head havin a plural- 'feed plungers, one for each spray head and with a luralit of com ressin plun ers one for achspray head, End a luralit' of compressed air pistons, one for each spray head, a discharge runway and a flame device for flashing or igniting and sterilizing the freshly coated cans as the pass on the dischar e runway, substantia ly as specified.

9. n a spray can lac uering machine, the combination with an en less flexible can carrier furnished with a series of. rotatable can holders, of a runway for delivering the cans to said holders, means for axially rotating the cans in the holders and a reciprocating spray head adapted to enter the rotating can, substantiallyas specified.

10. In a spray can lac uering machine, the combination with an end ess flexible can carrier furnished with, a series of rotatable can holders, of a runway for delivering the cans .tosaid holders, means'for axially rotating the cans in'the holders and a reciprocating spray head adapted to enter the rotatin can, and a discharge runway, substantial y as specified.

11. In a spray can lacquering machine, the

combination with an endless flexible can carto said holders, means for rotating the (ansi- 100 in the holders and a reciprocating sui-ay head adapted to enter the rotatin car, a dischargerunway, a flame device or hashing and sterilizing the freshly lacquered cans, substantially as specified.

12. In a spray can lac uering machine, the

(less'flexible can carrier furnished with a series of `rotatable can holders, of a runway for' delivering the cans' to said holders, means for rotating thecans in the holders and a reciprocating spray head adapted to enter the rotating can, a feed tank for the lacquer and a feed plunger therefor,substantially1 as specified;

13. In a spray can lac uering machine, the combination with an en essflexible can carrier furnished with a series of rotatable can holders, of a runway for delivering the cans to said holders, means for rotating the cans in the holders and a .reciprocating spray head adapted to enter the rotating can, a feed tank for the lacquer and a feed .lunger therefor, having a feed pocket for de ivering the lac4 uer in a measured quantity necessary qh can at each stroke of said feed plunger, substantially as specified.

14. In a machine for lacquering or coating theinterior of cans with lacquer or other. protective coating, the combination with a reciprocating gang of spray heads, of means p 130 i spaced relatively to said can holders, subl rollers, a belt enter the cans and can holders, substantially as specified;

' cans in said holders,

.p lungers, one for each .carrier Ytively to said can Call a gang of recip- 16. The combination with a gang of recip? roca 0' spray heads, of a chain can carrier furnished with a series of can holder rollers, and a belt for axially rotating la group of cans in said holders, and a can delivery runway, said spray heads being con-v strueted and adapted to enter'the cans and stantially as specified.

17. The combination with a gang of reciprocatingspray heads, of a carrier furnished' with a series of can holder for axially rotatinga group of cans in said holders, a can dehvery runway and a can discharge runway, said s ray heads being constructed and adapte to spacedfrelatively to said 18. The combination with a ang of recprocating spray heads, of a chain can 'carrier furnished with a series of can holder rollers, a belt orrotating a group of cans a candelivery runway, a ge runway, ,;anda flame device for igniting and andisterilzing the in said holders,

'cans and drying/and hardening the coatingthereof,y substantially as specified. A-

on the interior/ 19.`Tl 1 e eonbin;11tio1s'wig;h ciprocahngspray ea o a carrier ed with a series ofan holder rollersand a belt for rotating. a group of spray head, substanianang of recham'can tlally as spemied.

20. The coinbination with ciprocating rayheads, of a rollers and a beltfor rotating va group of rotating a series of cans while' cans and spaced rela-I link chain can car head, substan link chain can' presslng ypl and a'gang of feed ed with a series of can holder f a gang of feed plungers, one for each spray headand a gang of compressing plungers, one for each spray head, substantially as specified.

21. The combination with a of reciprocating spray heads, of a link chain can carrier furnished with a series of can holder rollers and a belt for rotatin a group of cans in said holders, a gang of one forV each spray pressing plungers, and a gang of cans in said holders,

head and a gang of comone for each spray head all pistons, one for each spray :ially as specified. v 22. The combination with Ya gang of reciprocating spra heads, of a linkA chain can carrier furnishe with a series of can holder rollers, and a belt for rotating a group of cans insaid holders, a gang `offeed plun` ed plungers,

gers, one for each spray head, a gang of compressm plun ers, gang o? air pigstons, one foreach anda feed tank for theliquid coating material, substantially as specified.

V23. The 'combination with a gang of rteciprocating spray heads, of alink chain can sp ay head lacquer or carrier furnished with a series of-can holder rollers,y and a belt for rotatin cans in said holders, a gang of l011e for each spray head, a pressing plungers, one for eac a gang of air head, a feed ank for the Vcoating material 'and a substantially as speciied.

24. The combination with' a an ciprocating spray heads, of a carrier furnished withv a seriespf can holder a group of eed plungers,

g Aot complstons, one for each spray liquid lacquer or g of reone for each spra head, a

spray head,

closed supplyl tank,

chain can rollers, and a belt for rotating a group of cans in said holders, a gang offeed plungers, one foreach spray head, a gang of coniungers, one for head, a feed tank for the liquid lacquer' or coating material, a closed supply tank, a sup 1y pipe connecting said feed tank with sal supp y tank and agvent pipe also connecting said tanks,-the lower end of the each spray head, a gangof air pstonsh one for each spray ai ang of relili chain can `supply pipe projectingbelow the lower endV of-the vent pipe, substantiallyas ecifie'd.

-JOHN G. HOD SON. Witnesses:`- Y v PEARL Wma; A, GEIGER. 

